B, n to the 3rd power + 4n to the 2nd power +8n -16
Answer:
Options: A, B, and C correctly solve for x.
Step-by-step explanation:
A).
= ![\frac{15}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B15%7D%7B2%7D)
Multiplying both sides by 2 gives;
5x = 15
x = 15 ÷ 5 = 3
∴ This option correctly solve for x.
B).
x +
= 7
x = 7 -
= ![\frac{14}{2} -\frac{7}{2} = \frac{7}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B14%7D%7B2%7D%20-%5Cfrac%7B7%7D%7B2%7D%20%3D%20%5Cfrac%7B7%7D%7B2%7D)
∴ This option correctly solve for x.
C).
x + 3 = ![\frac{21}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B5%7D)
x = ![\frac{21}{5} - \frac{15}{5} = \frac{6}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B5%7D%20-%20%5Cfrac%7B15%7D%7B5%7D%20%20%3D%20%5Cfrac%7B6%7D%7B5%7D)
But the option give x as 5/6 hence this option does not correctly solve for x.
D).
5x = 11/2
x = 11/2 ÷ 5 = 11/2 × 1/5 = 11/10
But the option gives x as 10/11 so it does not correctly solve for x.
Answer:
inequality form: x<14
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.